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Chemistry - Some Basic Concepts of Chemistry

Practise 24 BITSAT previous year questions on Some Basic Concepts of Chemistry, compiled from papers spanning 2009 to 2024. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty BITSAT tests.

Some Basic Concepts of Chemistry has been asked in 13 of the 16 years of BITSAT papers analysed (2009–2024), with 24 questions in all. 29% of them were easy, 50% moderate and 21% tough. Most of its questions came from 2016, with 4 questions that year. In the last three years (2022–2024) it had 3 questions across 3 papers, about 1 per paper.

The chapter's 5 topics are not weighted equally: Concentration terms (8 questions, 33%), Mole concept (8 questions, 33%), and Quantitative measures in chemical equations (5 questions, 21%) have been asked the most. Concentration terms has also led over the last five years, with 3 questions. Concentration terms has produced the most tough questions (2).

  1. 1In which mode of expression, the concentration of a solution remains independent of temperature?2024 (Memory Based Paper 1)Concentration terms
  2. 21 L closed flask contains a mixture of 4 g of methane and 4.4 g of carbon dioxide. The pressure inside the flask at is [Assume ideal behavio2024 (Memory Based Paper 2)Mole concept
  3. 3A certain metal sulphide, , is used extensively as a high temperature lubricant. If is by mass sulphur, metal has atomic mass.2022Laws of chemical combination
  4. 4If 0.2 gram of an organic compound containing carbon, hydrogen and oxygen on combustion, yielded 0.147 gram carbon dioxide and 0.12 gram wat2020Quantitative measures in chemical equations
  5. 5An ideal gaseous mixture of ethane and ethene occupies 28 litre at 1 atm and . The mixture reacts completely with to produce and Mole fracti2020Concentration terms
  6. 6The amount of present in 1 litre of solution, is:2020Concentration terms
  7. 7In a compound C , H and N are present in 9 : 1 : 3 . 5 by weight. If molecular weight of compound is 108 , the molecular formula of compound2019Mole concept
  8. 8The empirical formula and molecular mass of a compound are CH 2 O and 180 g respectively. The molecular formula of the compound will be2018Mole concept
  9. 9On electrolysis of water, a total of 1 mole of gases is evolved. The amount of water decomposed is2017Mole concept
  10. 100 . 765 g of an acid gives 0 . 535 g of CO 2 and 0 . 138 g of H 2 O . Then, the ratio of percentage of carbon and hydrogen is2017Mole concept
  11. 11Which of the following has the largest number of moles?2017Mole concept
  12. 12The normality of (wt/vol) solution of ammonia (density ) is approximately:2016Concentration terms
  13. 13of a sample of and is dissolved in solution. of this solution neutralises of . The of in this sample is2016Concentration terms
  14. 14Formation of polyethylene from calcium carbide takes place as follows The amount of polyethylene obtained from of is2016Quantitative measures in chemical equations
  15. 15A compound of Xe and is found to have of Xe. What is oxidation number of Xe in this compound?2016Quantitative measures in chemical equations
  16. 16The formation of and illustrates the law of2014Laws of chemical combination
  17. 17of ferrous ammonium sulphate react completely with solution. The percentage purity of the sample is2014Quantitative measures in chemical equations
  18. 18How many grams of concentrated nitric acid solution should be used to prepare of The concentrated acid is2013Concentration terms
  19. 19Equal weights of and are dissolved separately in equal volumes of solutions. Molarity of the two solutions will be :2013Concentration terms
  20. 20Number of atoms of He in 100 amu of He(atomic wt. of He is 4) are:2012Mole concept
  21. 21In the reaction of with an oxalate in acidic medium, is reduced to and is oxidised to . Hence, of 0.02 is equivalent to2012Concentration terms
  22. 22The product of atomic weight and specific heat of any element is a constant, approximately This is known as:2011Mole concept
  23. 23The vapour density of ozone is2010Quantitative measures in chemical equations
  24. 24Given the numbers . The number of significant figures for the three numbers are2009Significant Figures

Frequently Asked Questions

1.How many questions are available for Some Basic Concepts of Chemistry?

This chapter includes 24 questions compiled from BITSAT papers spanning 2009 to 2024.

2.Are these questions only from BITSAT, or from other exams too?

These are BITSAT questions specifically for the Some Basic Concepts of Chemistry chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Some Basic Concepts of Chemistry an important chapter for BITSAT Chemistry?

Some Basic Concepts of Chemistry has appeared in 13 of the 16 years of BITSAT papers covered here, with 24 questions across 14 papers - about 2 per paper it appears in.

4.What is the difficulty level of Some Basic Concepts of Chemistry questions in BITSAT?

Of the 24 questions analysed for this chapter, 29% are easy, 50% moderate and 21% tough. 2016 had the most, with 4 questions.

5.Which topics in Some Basic Concepts of Chemistry should I focus on?

These topics have carried the most weightage in Some Basic Concepts of Chemistry:

  • Concentration terms - 8 questions (33%)
  • Mole concept - 8 questions (33%)
  • Quantitative measures in chemical equations - 5 questions (21%)
  • Concentration terms has produced the most tough questions (2).
6.Is Some Basic Concepts of Chemistry's weightage in BITSAT going up or down?

Across all 14 papers analysed, Some Basic Concepts of Chemistry has averaged about 1.7 questions per paper. In the last three years (2022–2024), that average has fallen, at about 1.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.